20342203111 has 16 divisors (see below), whose sum is σ = 22690886400. Its totient is φ = 18123170688.

The previous prime is 20342203103. The next prime is 20342203129. The reversal of 20342203111 is 11130224302.

It is a happy number.

It is not a de Polignac number, because 20342203111 - 2³ = 20342203103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20342203171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381646 + ... + 431668.

It is an arithmetic number, because the mean of its divisors is an integer number (1418180400).

Almost surely, 2^20342203111 is an apocalyptic number.

20342203111 is a deficient number, since it is larger than the sum of its proper divisors (2348683289).

20342203111 is a wasteful number, since it uses less digits than its factorization.

20342203111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51318.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 20342203111 its reverse (11130224302), we get a palindrome (31472427413).

The spelling of 20342203111 in words is "twenty billion, three hundred forty-two million, two hundred three thousand, one hundred eleven".